Bikini Bottom

I have been a hugh fan of Spongebob Squarepants. I even went to see the movie with my niece. I love the opening part when they sign the Spongebob Squarepants song with all the pirates traveling in the pirate ship and end up at the movie theatre. It’s sort of like a cross between the Simpson’s and the Mother Goose and Grimm. Spongebob’s pet snail, is he a dog or a cat? ; and what about the hillbilly squirrel, how long can she hold her breath with that goldfish bowel on her head?

But, what I don’t understand was the reference with Patrick and the crossdressing, (not that there is anything wrong with that.) in the full length movie?